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(No Model.)

J. E. ROOT.

OIRCUIT CLOSER. V

310.320.5045. Patented June 23, 1885.

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- JUDSON E. BOOT, OF \VESTFIELD, NEW YORK.

CIRCUIT-CLOSER.

SPECIFICATION forming part of Letters Patent No. 320,504, dated June 23, 1885.

Application filed March 2'1, was. (No model.)

To aZZ whom, it may concern..-

Be it known that I, J UDSON E. Roor, a citizen of the United States, residing at Westfield, in the county of Chautauqua and State of New York, have invented certain new and useful Improvements in Circuit-Closers; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

The present invention has relation to certain new and useful improvements in telegraph-keys; and it consists inthc novel construction of the several parts, substantially as shown in the drawings, and hereinafter described and claimed.

Figure 1 is a side view, part in section, of a key provided with my improvements, and Fig. 2 is a detail view of a portion of the lever and the trip.

The key is of ordinary construction, except in the features presently described.

The base has the usual anvil or post, A,

on which is mounted the common platinum point, a.

The key is provided above the anvil with a vertical mortise, B, for a pin, 0, which is held and movable vertically in such mortise.

In the under side of the handle end of the key, leading outward from the mortise B, is formed a longitudinal groove or mortise, D. This mortise D forms a receptacle for the lever E, which is pivotally supported at e to the key. The inner end of lever E is connected with the pin 0, usually by inserting it in a transverse opening formed in such pin, as shown in Fig. 1. It is preferred to make this inner arm of the lever the longer, so that a slight depression of its other or outer arm will produce a more considerable movement of the pin in the operation of the device, as presently described.

To the outer arm of the lever is connected the trip, usually in the manner shown in Fig. 2. This trip, for convenience in adjustment, is, by preference, formed with a shank, F, which projects upwardly through an aperture, f, in the key, and has its upper end threaded to receive the head or button G.

It is manifest, however, that the trip might be formed in a single piece, and be formed integrally with or rigidly secured to the lever without departing from the spirit of the invention.

The thumb-piece H has a central opening, which fits over the shank F, and it is threaded onto a nipple, h, which surrounds the aperturef, and the upper side of the thumbpiece is formed with a mortise, into which turns the shank of the thumb-piece G, which is threaded onto the shank F, as shown.

In operation, when the key is in use, the finger of the operator will depress the button, and the lever will raise the pin 0 clear of the anvil. On releasing the thumb piece pressure will be removed from the button, and the gravity of pin 0 will cause it to fall on the anvil, and so close the circuit with certainty when the instrument is not being used in sending. By the adjustments of the sections of the trip such parts may be set to give the lever, and consequently the pin, a greater or less throw, as may be desirable in different instruments. 7

Ordinarily the gravity of the pin 0 will cause same to drop properly to close the circuit; but, where desired, this gravity may be aided by springs suitably disposed to depress the pin or the inner arm of the lever.

WVhile I prefer to incase the lever in the mortise D of the key, because thereby it is out of the way and cannot be damaged or come in contact with the operators sleeve, such lever might be pivoted to one side of the key and the trip project up alongside instead of through the thumb-piece. The guide B also might be secured alongside the key instead of formed through it.

It will also be understood that instead of using a separate platinum stud on the key the pin 0 might also be used as such stud and be arranged to fall, when the instrument is not in use sending, directly onto the stud of the anvil. In such use, instead of forming the guide-mortise B entirely through the key, such mortise would be closed at its upper side to provide a firm, rigid bearing for the pin 0 when the instrument is being used in sending.

It will be noticed that all the parts of my automatic closer are supported wholly by the adjustable one upon the other, substantially as and for the purposes set forth.

In testimony that I claim theabove I have hereunto subscribed my name in the presence of two "witnesses.

JUDSON E. ROOT.

Witnesses:

FRANK A. HALL, EDWARD D. DIGKSON. 

